Same here. Trying to start a mission with a premade squad from one of the social hubs seems to trigger it. Game freezes for a couple seconds, then I get host migrated to an entirely new instance of the hub (or go solo into the mission, if that goes through). I wasn't very active during the Dagath update, but it sure seems MUCH worse now. Today I had a freeze mid-mission, when a squadmate was trying to load into the event mission. And then, as you can guess, I got host migrated and had totally different squadmates load in (and I was made host). Couldn't complete the event mission cause obviously we bugged and the extraction point never loaded.
From browsing the forums, it seems mainly like a PS5 issue? I downloaded the PS4 version of the game and will see tomorrow if it's a bit better. I can only hope for the best at this point, considering redownloading the game, clearing cache and rebuilding database did nothing. My setup remains the same, and I do use wired internet. It's a Warframe issue for sure. I'll try to record it next time it happens.